Today on Twitter, Maroon 5 announced they will be performing on 'Saturday Night Live' on Nov. 5 with special guest Travie McCoy! With Charlie Day of 'It's Always Sunny in Philadelphia' playing host, we hope Adam and the boys will be featured in a couple of skits! 'Glee' star Lea Michele and Ryan Seacrest were sending kind thoughts to TV personality, Giuliana Rancic, who announced she has been diagnosed with breast cancer. Skylar Grey sent birthday wishes to her friend and collaborator, Eminem, and Coldplay posted a picture of lead singer Chris Martin riding a unicycle dressed as an elephant! Lily Allen tweeted a picture of her puppies while Timbaland and Missy Elliot were hyping their creative genius on an upcoming song. They say it has a '90s flair to it, but we're sure it won't sound like anything we've heard before! Read what your favorite stars were chirping about today!